private T GetService <T>(ITextBuffer textBuffer, Type serviceType)
{
var vsBuffer = adaptersFactory.GetBufferAdapter(textBuffer);
if (vsBuffer == null)
{
return(default(T));
}
Guid guidServiceProvider = VSConstants.IID_IUnknown;
IObjectWithSite objectWithSite = vsBuffer as IObjectWithSite;
IntPtr ptrServiceProvider = IntPtr.Zero;
objectWithSite.GetSite(ref guidServiceProvider, out ptrServiceProvider);
Microsoft.VisualStudio.OLE.Interop.IServiceProvider serviceProvider =
(Microsoft.VisualStudio.OLE.Interop.IServiceProvider)Marshal.GetObjectForIUnknown(ptrServiceProvider);
Guid guidService = serviceType.GUID;
Guid guidInterface = typeof(T).GUID;
IntPtr ptrObject = IntPtr.Zero;
int hr = serviceProvider.QueryService(ref guidService, ref guidInterface, out ptrObject);
if (ErrorHandler.Failed(hr) || ptrObject == IntPtr.Zero)
{
return(default(T));
}
T result = (T)Marshal.GetObjectForIUnknown(ptrObject);
Marshal.Release(ptrObject);
return(result);
}
private void TestSetGet()
{
int hr;
object o;
hr = m_iows.GetSite(typeof(IAMGraphBuilderCallback).GUID, out o);
Debug.Assert(hr < 0, "Should fail until we assign a value");
foo1 f = new foo1();
hr = m_iows.SetSite(f);
DsError.ThrowExceptionForHR(hr);
hr = m_iows.GetSite(typeof(IAMGraphBuilderCallback).GUID, out o);
DsError.ThrowExceptionForHR(hr);
Debug.Assert(o == f);
}
private void Config()
{
int hr;
IBaseFilter pFilter;
object o;
IFilterGraph ifg = new FilterGraph() as IFilterGraph;
IObjectWithSite iows = ifg as IObjectWithSite;
hr = iows.SetSite(this);
hr = iows.GetSite(typeof(IAMFilterGraphCallback).GUID, out o);
hr = ((IGraphBuilder)ifg).AddSourceFilter("DirectShowLib.dll", null, out pFilter);
IPin pPin = DsFindPin.ByDirection(pFilter, PinDirection.Output, 0);
hr = ((IGraphBuilder)ifg).Render(pPin);
//hr = ((IGraphBuilder)ifg).RenderFile("DirectShowLib.dll", null);
DsError.ThrowExceptionForHR(hr);
}
public static Microsoft.VisualStudio.OLE.Interop.IServiceProvider GetServiceProvider(this IVsTextBuffer buffer)
{
IntPtr pUnk = IntPtr.Zero;
try
{
IObjectWithSite objectWithSite = buffer as IObjectWithSite;
Guid gUID = typeof(Microsoft.VisualStudio.OLE.Interop.IServiceProvider).GUID;
objectWithSite.GetSite(ref gUID, out pUnk);
return(Marshal.GetObjectForIUnknown(pUnk) as Microsoft.VisualStudio.OLE.Interop.IServiceProvider);
}
finally
{
if (pUnk != IntPtr.Zero)
{
Marshal.Release(pUnk);
}
}
}
private static System.IServiceProvider GetServiceProviderFromTextBuffer(ITextBuffer textBuffer)
{
if (textBuffer.Properties.ContainsProperty(typeof(IVsTextBuffer)))
{
IObjectWithSite objectWithSite = textBuffer.Properties.GetProperty <IObjectWithSite>(typeof(IVsTextBuffer));
if (objectWithSite != null)
{
Guid serviceProviderGuid = typeof(Microsoft.VisualStudio.OLE.Interop.IServiceProvider).GUID;
IntPtr ppServiceProvider = IntPtr.Zero;
// Get the service provider pointer using the Guid of the OleInterop ServiceProvider
objectWithSite.GetSite(ref serviceProviderGuid, out ppServiceProvider);
if (ppServiceProvider != IntPtr.Zero)
{
// Create a System.ServiceProvider with the OleInterop ServiceProvider
OleInterop.IServiceProvider oleInteropServiceProvider = (OleInterop.IServiceProvider)Marshal.GetObjectForIUnknown(ppServiceProvider);
return(new Microsoft.VisualStudio.Shell.ServiceProvider(oleInteropServiceProvider));
}
}
}
return(null);
}
internal static IVsWindowFrame GetWindowFrame(this IVsTextView textView)
{
IObjectWithSite objWithSite = (IObjectWithSite)textView;
var serviceProviderGuid = typeof(Microsoft.VisualStudio.OLE.Interop.IServiceProvider).GUID;
IntPtr serviceProviderPointer;
objWithSite.GetSite(ref serviceProviderGuid, out serviceProviderPointer);
var serviceProvider = (Microsoft.VisualStudio.OLE.Interop.IServiceProvider)Marshal.GetObjectForIUnknown(serviceProviderPointer);
Marshal.Release(serviceProviderPointer);
serviceProviderGuid = typeof(SVsWindowFrame).GUID;
var interfaceGuid = typeof(IVsWindowFrame).GUID;
IntPtr windowFramePointer;
serviceProvider.QueryService(ref serviceProviderGuid, ref interfaceGuid, out windowFramePointer);
var windowFrame = (IVsWindowFrame)Marshal.GetObjectForIUnknown(windowFramePointer);
Marshal.Release(windowFramePointer);
return(windowFrame);
}
/// <summary>Extension method to simplify using the <see cref="IObjectWithSite.GetSite"/> method.</summary>
/// <typeparam name="T">Type of the interface to get.</typeparam>
/// <param name="ows">An <see cref="IObjectWithSite"/> instance.</param>
/// <returns>Receives the interface pointer requested in <typeparamref name="T"/>.</returns>
public static T GetSite <T>(this IObjectWithSite ows) where T : class
{
ows.GetSite(typeof(T).GUID, out var pSite).ThrowIfFailed(); return((T)pSite);
}
